Tech Tips
Lenovo continually updates the support website with the latest tips and techniques that you can use to solve 
issues that your server might encounter. These Tech Tips (also called retain tips or service bulletins) provide 
procedures to work around issues or solve problems related to the operation of your server.
To find the Tech Tips available for your server: 
1.  Go to 
http://datacentersupport.lenovo.com and navigate to the support page for your server.
2.  Click on the documentation icon 
from the navigation pane.
3.  Click Documentation Type ➙ Solution from the drop-down menu.
Follow the on-screen instructions to choose the category for the problem that you are having.
Security advisories
Lenovo is committed to developing products and services that adhere to the highest security standards in 
order to protect our customers and their data. When potential vulnerabilities are reported, it is the 
responsibility of the Lenovo Product Security Incident Response Team (PSIRT) to investigate and provide 
information to our customers so they may put mitigation plans in place as we work toward providing 
solutions.
The list of current advisories is available at the following location:
https://datacentersupport.lenovo.com/ 
product_security/home
Power on the server
The server can be turned on (power LED on) in any of the following ways: 
•  Press the power button. Before the operating system starts running, you can press Enter to enter Startup 
Interrupt Menu. In this menu, a few options are available for various purposes:
–  Press Esc to resume to normal startup.
–  Press F1 to enter the Setup Utility.
–  Press F10 to diagnose hardware.
–  Press F11 to choose a temporary startup device.
–  Press Ctrl + P to enter the Management Engine setup screen or initiate a remote connection.
–  Press Enter to pause.
•  The server can restart automatically after a power interruption. 
Note: If the boot screen lingers with the message of “System Security - The system has been tempered 
with,” it means the server cover is not properly installed. Remove and reinstall it (see 
“Server cover 
replacement” on page 143
); then, restart the server.
For information about powering off the server, see 
“Power off the server” on page 9.
Power off the server
The server remains in a standby state when it is connected to a power source. To remove all power from the 
server (power-on LED off), you must disconnect all power cables.
To place the server in a standby state (power-on LED flashes once per second): 
Chapter 1. Introduction 9